Create VSSX Documents via C#

Native and high performance VSSX (Portable Document Format) creation programmatically using server side .NET APIs.

Generating VSSX file dynamically within running application is easy. In order to create VSSX documents from scratch without requiring MS Office, we’ll use

Aspose.Diagram for .NET

API that offers different features for visio creation, manipulation and conversion using .NET platform. Developers can easily enhance code for writing data, generating shapes or graphs.

How to Create VSSX via C#

It is easy for the developers to create, load, modify and convert VSSX within running different reporting applications for data processing in just a few lines of code.

Include the namespace in your class file
Create Diagram class instance.
Access the first page of the diagram.
Add text in the page.
Use Save method to save the diagram as VSSX file.

System Requirements

Just make sure that system have Microsoft Windows or a compatible OS with .NET Framework, .NET Core, Windows Azure, Mono Platforms as well as development environment like Microsoft Visual Studio.

Install from command line as nuget install Aspose.Diagram or via Package Manager Console of Visual Studio with Install-Package Aspose.Diagram.
Alternatively, get the offline MSI installer or all DLLs in a ZIP file from downloads

Following source code shows how to create a VSSX file using C#.
// Create Diagram class instance.
Diagram diagram = new Diagram();

// Access the first page of the diagram.
Page page = diagram.Pages[0];

// Add Text shape.
Shape shape = page.AddText(1, 1, 1, 1, "Test text", "Calibri", "#a5a5a5", 0.25);

// Save the Diagram as .vssx file.
diagram.Save("out.vssx",SaveFileFormat.VSSX);

An Visio Programming Library capable of building cross-platform applications with the ability to generate, modify, convert, render and print VSSX files. .NET Visio API not only convert between spreadsheet formats, it can also render Visio files as images, VSSX, HTML and more, thus making it a perfect choice to exchange documents in industry-standard formats.

VSSX What is VSSX File Format?

Files with .VSSX extension are drawing stencils created with Microsoft Visio 2013 and above. The VSSX file format can be opened with Visio 2013 and above. Visio files are known for representation of a variety of drawing elements such as collection of shapes, connectors, flowcharts, network layout, UML diagrams, software diagrams, database models, objects mapping and other similar information. Microsoft Visio also provides the capability to convert Visio files to different file formats such as PNG, BMP, PDF and others. It is available for both Windows and Mac OS.

Other Supported Visio Generation

You can also create other Microsoft Visio formats including few listed below.

VDX (Visio drawing XML File)

VSTX (Visio template File)

VSDM (Visio macro-enabled drawing File)

VSSM (Visio macro-enabled stencil File)

VSTM (Visio macro-enabled template File)

VSDX (Visio drawing File)